Table 8 Factors affecting sleep quality in studied cases.

Age/years

 Mean ± SD

38.74 ± 18.76

39.75 ± 11.67

t = 0.294

p = 0.769

Sex

 Male

82 (48.8)

18 (56.2)

χ² = 0.595

p = 0.440

 Female

86 (51.2)

14 (43.8)

Psoriasis type

 Palmoplantar psoriasis

26 (15.5)

6 (18.8)

χ² = 2.52

p = 0.284

 Plaque type psoriasis

130 (77.4)

26 (81.2)

 Scalp psoriasis

12 (7.1)

0

Disease duration/years

Z = 3.41

p = 0.001*

 Median (min–max)

6.5 (1–30)

10 (2–18)

PASI score

 Mild < 10

134 (79.8)

18 (56.2)

χ^2MC = 11.25

p = 0.004*

 Moderate (10–20)

30 (17.9)

10 (31.2)

 Severe > 20

4 (2.4)

4 (12.5)

Pruritus severity scale

 Mild (3–6)

68 (40.5)

0

MC = 73.95

p < 0.001*

 Moderate (7–11)

64 (38.1)

0

 Severe (12–22)

36 (21.4)

32 (100)

Psoriasis disability index%

4 (0–26)

20.5 (4–26)

Z = 7.44

p < 0.001*